HouseMark is a joint venture by the Chartered Institute of Housing and the National Housing Federation dedicated to improving housing standards. It is committed to working for, and with, the social housing sector to improve performance and efficiency. HouseMark has over 550 member organisations and also works closely with the Housing Corporation, CLG, Audit Commission Housing Inspectorate, Community Housing Cymru, IDeA, the National Federation of ALMOs and other key organisations helping local authorities, ALMOs and housing associations to improve service delivery. They offer subscriber services for their members and consultancy services for the social housing sector.